Centrifugal machine.



HERMANN STEBLER, OF BASEL, SWITZERLAN D, ASSIGNOR TO THE FIRM OF FRBEREI-'&

APPRETUR-GESELLSCHAFT (VORMALS A. CLAVEL d; FRITZ LINDENMEYER), OF BASEL,

SWITZERLAND.

CENTRIFUGAL MACHINE.

Specication of Letters Patent.

Patented July 9', 1907.

Application nea March 25,1907. sereine. 364,493.

To all whom it may concern:

Be it known that I, HERMANN STEBLER, a citizen of the Swiss Republic, and a resident of Basel, Switzerland` have invented new and useful Improvements in Centrifugal Machines for Tinctorial Purposes, of which the following is a full, clear, and exact description.

The centrifugal machin es used till up to-day for tinctorial purposes comprise within a stationary vessel a rotary drum with a perforated peripheral wall, which drum is designed to receive the fibrous material to be treated. In a particular kind of these machines, the tinctorial liquid is constantlymaintained in circulation by the arrangement of a worm carried by the centrifugal drum and adapted to force the liquid up or down, so as to convey it again into the inner space of the drum. In these respects, the centrifugal machine according to the present invention resembles somewhat to the said known kind of machines, that is to say, that it is also arranged so as to automatically maintain the tinctorial liquid in constant circulation.

One feature of this machine is that the nave or bush of the centrifugal drum is provided with openings for the passage of the tinctorial liquid.

As another feature, the centrifugal drum of the improved machine is provided at its bottom with slots or slot-like openings and externally with paddles or curved blades along these slots arranged so that the tinctorial liquidv in the lower part of the vessel may be forced back by them into the centrifugal drum through the bottom slots and also through the nave openings of the drum, with the object ofbeing distributed over the whole height of the drum and upon the different layers of the br'ous material contained therein. Preferably, some or all of the bottom slots of the drum may have 35 above them hollow perforated distributing bodies extending nearly over the whole height of the drum and closed towards the periphery of the latter, these hollow perforated bodies being designed to allowa uniform and eflcacious distribution of the liquid forced back into their inner space through the slots they cover.

The accompanying drawings illustrate two embodiments of the present invention.

Figure l is a vertical section through the first preferred construction in which the centrifugal drum contains hollow perforated distributing bodies above some of its bottom slots. Fig. 2 is a horizontal section on the line X-X of Fig. l, an auxiliary perforated bottom wall of the drum being broken away so as to show one of the bottom slots of the latter. Fig. 3 50 shows the form of the bottom paddles of the drum.

Fig. 4 is a. vertical section through the second arrangement of more simple construction in that sense that its drum does not contain any hollow perforated distributing body. Fig. 5 shows the form of the bottom paddles 55 of the drum of this second construction. Fig. 6 is a l l i plan view of the drum bottom of the second embodiment, a bottom sieve being removed. Fig. 7 shows a modified arrangement of the bottom slots and the bottom paddles of the centrifugal drum.

Referring first to Figs. l, 2 and 3, which represent the preferred construction, a indicates the stationary' vessel designed to be supplied with the tinctorial liquor to be used and containing a rotary drum b fixed in a well known manner upon a vertical rotating shaft c. The drum b aswell as the vessel a are open at the top to allow of the charging of the fibrous material to be treated into the centrifugal drum b. The peripheral wall of the drum b is perforated and its hollow nave j has openings c for the passage of tinctorial liquid. The bottom of the drum b is provided with radially directed slots d Fig. 2) and externally, along the latter, with paddles or curved blades a (Figs. 'l and 3) of such configuration as to force the liquid in the lower part of the vessel back into the drum through the bottom slots thereof, and partly also through the nave openings k of the drum. In the drawing, there are six bottom slots d and three of these slots have above them hollow perforated distributing bodies h extending over the whole height of the perforated peripheral wall of the drum and-connected on the one hand tota full part of said drum wall and on the other hand to an auxiliary sieve-like bottom wall g of the drum, which covers the other, free slots d so as to prevent them from being obstructed by the fibrous material introduced into the drum. The liquid taken and forced back by the Vsaid bottom paddles of the drum flows partly into the inner space of these hollow perforated bodies in which it is uniformly distributed on all sides upon the different layers of the fibrous material charged between the said hollow bodies, the perforations of which produce a dispersion of the liquid into a great number of fine jets; another part of the liquid will be forced back directly into the drum through those of its bottom slots which have no distributing body above them. In horizontal transverse section, the hollow distributing bodies h show a Ulikey form and their' cross area or width diminishes progressively from the base to the top.

The working of the machine is as follows: After the introduction of the fibrous material to be treated into the centrifugal drum b, the vessel a is supplied with the tinctorial liquid to be used. Then, the centrifugal drum b is set in rotary motion. By the action of the centrifugal force, the fibrous material charged into the drum is pressed or forced against the peripheral Wall of tlie latter and a free space results thus between 105 this material and the drum nave j. By the same action of the centrifugal force, the tinctorial liquid is driven through the l'ibrous material from the inside to the outside so as to be discharged at the peripher7 of the drum into the vessel a, while at the same time the liquid out by a rapid rotation of the centrifugal drum.

in the lower part of the vessel is taken by the bottom I paddles e of the rotating drum and forced back through the bottom slots d partly directly from underneath into the fibrous material and partly into the innerspace of the hollow perforated distributing bodies h, whereby it is uniformly distributed over the whole height of the drum upon the different layers of its charge; a further part of the liquid still passes through the nave openings lc of the drum in order to return into this latter. The fibrous material having thus been sufficiently impregnated, the liquid is discharged from the vessel a and the fibrous material may then be swung In. order to prevent the contact of the tinctorial bath With the driving shaft c, the bottom of the vessel a lis provided with an upright hollow sleeve 1l serving also as a support for the shaft c and upon which is freely put the bell-shaped nave j of the drum.

The construction of the Figs. Li, 5 and 6 is similar to that above described except that its centrifugal drum b contains no distributing bodies of the kind illustrated in the foregoing example. In this case, the tinctorial liquid, by the action of the external bottom paddles c of the drum, is forced back through the bottom slots d and through an auxiliary sieve-like bottom wall 'n directly from underneath into the drum and into the fibrous material contained therein. I `urthermore, the drum paddles care here reinforced by transverse ribs o (Figs. i and 5).

instead of placing the bottom slots I and paddles e of the drum in a radial direction, they may also be arranged according to acurved line, as represented in Fig. 7, the paddles extending obviously along one of the longitudinal edges of the bottom slots d.

Whatv I claim is:

1. In a centrifugal machine for tinctorial purposes having a stationary vessel and a rotary centrifugal drinn within this vessel for receiving the fibrous material to be treated by a tinctorial liquid, the arrangement wherein the centrifugal drum is provided at its bottom with slots and externally with paddles extending along these slots` and adapted so as to force the tinctorial liquid from the lower part ot said vessel back into the interior of the drum, with the object of maintaining a constant circula tion of the liquid through the material to be treated, substantially as hereinbefore described.

2. In a centrifugal machine for tinctorial purposes having a stationary vessel and a rotary centrifugal drum within this vessel for receiving theibrous material to be treated by a tinctorial liquid, the arrangement wherein the centrifugal drum is provided at its bottom with slots and externally with paddles extending along these slots and adapted s0 as to force the tinctorial liquid from the lower part of said vessel back into the interior of th'e drum` with the object of maintaining a constant circulation of the liquid through the material to be treated, the

drum having a hollow nave provided with openings allowing a part of the tinctorial liquid moved by the said drum paddles to return through them into the drum, substan tially as hereinbefore described.

3. In a centrifugal machine for tinctorial purposes having a stationary vessel and a rotary centrifugal drum within this vessel for receiving the fibrous material to be treated by a tinctorial liquid, the arrangement wherein the centrifugal drum is provided at its bottom with slots and externally with paddles extending along these slots, a plurality of such slots having above them hollow perforated distributing bodies adapted to receive and to dis perse upon the fibrous material in the drum the tinctorial liquid which maybe forced back into them by the action of the respective drum paddles, substantially as hereinbefore described.

4. In a centrifugal machine for tinctorial purposes havingl a stationary vessel and a rotary centrifugal drum within this vessel for receiving the fibrous material to be treated by a tinctorial liquid, the arrangement wherein the centrifugal drum is provided at its bottom with slots and externally with paddles extending along these slots, a plurality of such slots having above them hollow perforated distributing bodies extendng nearly over the whole height of the drum, closed on the side turned towards the periphery of this latter and adapted to receive and to disperse upon the different layers of the fibrous material in the drum the tinctorial liquid which may be forced back into them by the action of the respective drum paddles, substantially as hereinbefore described.

5. In a centrifugal machine for tinctorial purposes having a stationary vessel and a rotary centrifugal drum within this vessel for receiving the fibrous material to be treated by a tinctorial liquid, the arrangement wherein the centrifugal drum is provided at its bottom with slots and externally with paddles extending along these slots, a plurality of such slots having above them hollow perforated distributing bodies havinga cross area diminishing progressively from the base to the top and adapted to receive and to disperse upon the fibrous material in the drum the tinctorial liquid which may be forced back into them by the action of the respective drum paddles, substantially as hereinbefore described.

G. In a centrifugal machine for tinctorial purposes hav4 ing a stationary vessel and a rotary centrifugal drum within this vessel for receiving the fibrous material to be treated by a tinctorial liquid, the arrangement wherein the centrifugal drum is provided at its bottom with slots and externally with paddles extending along these slots, a plurality of such slots having above them hollow perforated distributing hodies adapted to receive and to disperse upon the fibrous material in the drum the tnctorial liquid which may be forced back into them by the action of the respective drum paddles, the drum having a hollow nave provided with openings allowing a part of the tlnctorial liquid moved by the said drum paddles to return through them into the drum, substantially as hereinbefore described.

In witness whereof, I have hereunto signed my name in the presence ot two subscribing witnesses.

HERMANN S'IEBLER.

Witnesses Guo. GIFFonD, AMAND BRAUN. 

